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    • 9. 发明授权
    • Degradable polymer and preparation process of the same
    • 可降解聚合物及其制备方法相同
    • US5914381A
    • 1999-06-22
    • US925133
    • 1997-09-08
    • Yuji TeradoHiroshi SuizuChojiro HiguchiMasanobu Ajioka
    • Yuji TeradoHiroshi SuizuChojiro HiguchiMasanobu Ajioka
    • C08G63/60C08G63/08C08B3/00C08B13/00C08G63/664
    • C08G63/60
    • A degradable polymer and a process for preparing the degradable polymer which has a structure resulting from combination of a star-shaped polymer comprising a polyfunctional base compound of polycarboxylic acid having three or more carboxyl groups and/or anhydride of the same or aliphatic polyhydric alcohol having three or more hydroxyl groups and a unit of aliphatic hydroxycarboxylic acid, with aliphatic polyhydric alcohol having two or more hydroxyl groups or polycarboxylic acid having two or more carboxyl groups or anhydrides of the same. The degradable polymer leads to remarkably low coloration as compared with a polymer comprising polysaccharide as a polyfunctional base compound, has high melt tension as compared to common aliphatic polyester is excellent in processability on various molding methods, foam molding and blow molding in particular, and high transparency.
    • 一种可降解聚合物和一种制备可降解聚合物的方法,其具有由包含具有三个或更多个羧基的多元羧酸的多官能基础化合物和/或其相同的酸酐的多官能基础化合物或具有 三个或多个羟基和脂族羟基羧酸单元,与具有两个或多个羟基的脂族多元醇或具有两个或多个羧基的多元羧酸或其酸酐的酸酐。 与包含多糖作为多官能基础化合物的聚合物相比,与普通脂肪族聚酯相比,具有较高的熔融张力,可降解聚合物导致显着低的着色,在各种成型方法,发泡成型和吹塑成型方面具有优异的加工性,特别是高 透明度。